The Principle Of Color Changing Glasses Is Introduced

The lenses of color changing glasses darken when the sun's rays hit them. When the light faded, it became bright again. This is possible because the crystal of silver halide is at work. Under normal conditions, it keeps the lens perfectly transparent.

Under sunlight, the silver in the crystal is separated, and the free silver forms small aggregates inside the lens. These small silver aggregates, irregular patches with interlocking teeth, do not transmit light but absorb it, which darkens the lens as a result. In the case of dim light, the crystals form again and the lens returns to its bright state.